Cushion tire



A. A. RO'BB;

' cusHloN TIRE.

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CUSHIQN TIERE. I

application area rare ia'iaeo. serial ne. serale.

To all lwhom '5t may concern.:

Be .it known that l, Aureon A, Roms, a

citizen of the United' States, residin at lill lili

Akron, in thecounty of Summit and ot @bio have invented a certain new and useful dushion Tire,A of which the following is a specication.

This invention relates `to vehicle tires hav-- ing a rubber cushion body of arched or internally recessed form vulcanized on a metal base or rim, and my principal object is to admit of the withdrawal of thecore sections used to impart the recessed or channeledtorm to the rubber body, and leave or provide, attersuch withdrawal, aselt-coni tained or unitar securely mountedl telly of any one of the orinary types, complementally formed to receive said tire base, the invention being especially ed'ective Vin connection with tires of the pressed-on tire base adapted to be on a; xed rim or wheel @it the accompanying drawings, I Fig, l is ai perspective view, partly in section, of a portionof a tire embodying my invention, mounted on awheel.'

divided by a recess or channe 13, in this integra Jill; 2 is a perspective view oli' the split, mid e interlochng ring. t

Fig. 3 -is a sectional view of a portion of my improvedtire demounted tol show the Referring to the drawings, l0 is the telly l ot an ordinary spoked wheel havinga metal telly band o lined i: il shrunk thereon;

12 is the arc iedftire bod of sott vulcanized rubber, whose side an base ortlons are case continuous, of ovoid form in section, which imparts a high en: ot compressibility to the tire in a .raial direction. lin

order to remove the core which is used tor tire body' as to avoid breaking down under' .connection 'of the Vspacing means. with the main rim members;-

' rim members 14': by.' spot-weldin continued use, and considerable vskill may be'exercised inthese particulars. rlhe shape .and proportions shown in the drawings havebeen found to give good results after considerable experiment., i

1d', ld lare two .annular metal rim members, each provided with half of a tire chanu nel having*A an outer dan Pe l5, and 'rooved or dove-tailed to interloc with the ayer of vulcanized hard rubber. '1.6 by which each rim member is united with the soft rubber tirebody. Y

l? is a ring,trans versely 'split at lia and substantiall -shaped in section, with the cross-'baro the 'l'. at the inner eriphery of the metal rim structure, the si e projecting portions 1890i this ring being dove-tailed or undercut and interlitting with comp'lef mental overhanging portions 19 formed: on'

the inner edgesof the rim'members ill, sol that when the ring 17 is sprung outwardly v ing ring and also interlocked with said ring against transverse separation..y

'llbe inner 'peripheries of the rim. members '1d and the ring 17 are formed cylindricallyv of the same diameter, whichijs very sliwhtly less than the diameter of the cylin'rical outer surface of the folly band ll, so that va heavy pressure is required to :torce the tire onto the wheel and when so located thereon itis securely held by fric-tion in the. manner ci `an ordinary ressed-on tire. rl`he ring 17 isthen edeotive y held against radial' collapse by the folly band and its interlocking engagement with the metal base or'rim members on the tire is securely maintained.

'llhe ring 17 Y is united -with both of the itthereto as indicated at 20, 20 1n Fig. 3, t ereby supplementing the dove-tail interlocking of the parts. to form a permanent connection between them. This connection prevents the lateral-spreading of the ,rim members, as well as t eir relative circumferential movement when the tire is` used on a driving wheel, which movement would fbe dettimental to the life o the tire; and the spotwelding holds the ring in placel durin handling and application of the tire an insures a smooth inner periphery without` possibility of catching of the ring on the Xed rim during such'application.

I do not claim broadly the use-of a ring or other spacer between the base members 2. A vehicle tire comprising a pair of endless metal` base members, a cushion member of arched, cross-sectional form having itsy legs respectively vulcanized to said base members, and a transversely divided, metal ring inter osed between said base members and so umted with both of the latter as to make substantially a unitary structure of said base members and said ring.

3. The method of'making a cushion tire for vehicles which comprises molding and vulcanizing a rubber cushion member upon a pair of endless metal base members, around a. core, removing the core, interposing a spacing structure between said base members, and permanently securing it tothe latter.

In testimony whereof I have hereunto set my hand this 2nd dav of J une, 1920.

ARTHUR A. ROBB. 

